Rubber stamp and method of making the same



July 25, 1933. A, w. SCHMIDT l,920,110

RUBBER STAMP AND METHOD OF MAKING THE SAME Filed March 7, 1932 M9' ff lln-n---uu--n- INVENTO ATTOR N EY Patented July 25, 1933 i I .1 l'

ARTHUR vv. SCHMIDT, or sPRINGivALLEY,NEWYORK RUBBI'fIt` STAMP AND METHODOF MAKING THE SAME Application ined March 7, 1932. serial No. 597,379.

yond the holder for the attachn'ient ofa,

stamp facing strip containing type or other Y impressing indicia. l" Another object of the invention is to provide av method lof making rubber stamps consisting of providing a cliaiiiiel-sliaped holder and'then locating` a block of a ksize appreciably smaller than the interior area if of the holder in the holderand vulcanizing the rubber portion of the stamp in the holder Y rIhe stamp includes preferably a channelshaped metalholder in which crude rubber 2W is located and vulcanized, the rubber filling the holder and projecting beyond the open face thereof, and preferably anchored in the holder by means of inturned flanges at the -edges of the holder. A stamp of this kind has many advantages in that it not only pro-vides asuperior cushion for the stamp face and gives a superior resilient action to the stamping operation, but it lengthens the life of the face of the Vstamp and insures a superior action in all respects.

Heretofore rubber-stamps have ordinarily been made with blocks constituting backings to which the face of the stamp-is secured,

and the cushioning of the stamp face consists solely in the thickness of the'strip 'constiuting the stamp face, whereas with my improved stamp the-entire body'supporting the face is of rubber which is sufficiently soft 40and resilient for the purpose intended.

IVith these and other objects in View, the invention consists in certain novel `features of construction and combinations and arrangements of parts, all of which will be more fully hereinafter described and pointed out `in the claims. .1 j

In the accompanying drawing- Figure l is a view mainly in longitudinal section but partly in elevation illustrating /Lmy improved rubber stamp; and

Figure 2 is a view in transverse section on the line 2-2 of Figure l.

1 represents a channel-shaped holder which is preferably of metal, and 2 represents tlie body of thestamp which is of crude rubber vulcanized in the holder and, of course, adliearing to the surface of the holder by reason of the vulcanizingoperation which takes place after the rubber is in the holder.

To prevent any possibility of the separation of the holder and body after the stamp lhas been used for a certain length of time Y which might tend to break the bond between the body and holder, I provide inwardly projecting ianges 3-3 at the edges `of the 05.

holder, which not only project inwardly but backwardly; inl other words, these flanges are at a slight angle, as clearly illustrated in Figure 2, so that they form a secure ancliorage for the body.

The body 2 of' rubber extends appreciably beyond the open edge of the holder, and a facing strip 4 is secured thereto in any approved manner and carries type. or other printing indicia 5. l

6 represents a handle which is secured to the stamp preferably by providing a shank 7 on thehandle projecting through an opening 8 in the back of the holder 1, and secured in a recessY 9 in a block 1 0 located in the 80 holder and enclosed by the rubber body 2.

My improved stamp is, of course, capable of a wide range of modification in shape and form, as well as size and ornamentation, and I do not wish `to be limited to the-specific form ofdevice illustrated but consider myself at liberty to make such changes and alterations as fairly fall within the scope of the claims. In constructing my stamp I first form .the channel-shaped holder, then place the block 10 in the holder, insert the handle 6, the shank 7 on thefhandle being projected into the recess 9 in the block through the opening 8. The rubber portion 2 is then vulcanized in the holder.

What I claimA is 1. As a new article of manufacture, arubbei' stamp comprising a channel-shaped holder, a block in the holder, a handle, a stud on the handle projecting through the back :ai www of the holder and secured in therblook, a 3. The herein described method of making rubber body lling'the holder, enclosing the rubber stamps including, first, providing a block land projectin beyond the holder. channel-shaped holder, then locating a block 2. As a, new artiee of manufacture a rub# Vin the holder, said block being apprcciably 55 ber sta-mp comprising a, channel-shaped `smaller than the interiorfarea of the holder, 70 holder, u block located in the intermediate then locating a body of rubber in the holder, vportion ofthe holder and vappreciebly small-` and vulcanizing the rubber in the holder. er than the interior of the holder, a, rubber l Y body filling theholder, enclosing theblock l 'ARTHUR W. SCHMIDT. '10 and projecting beyond the holder; and a' Y vhandle secured tolthe holder. i i

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